.s. president barack obama addressed the nation and promised to track down those responsible. >> we still do not know who did this or why. people should not jump to conclusions before we have all the facts. make no mistake, we will get to the bottom of this. we will find out who did this, and we will find out why they did this. , anyesponsible individuals responsible groups will feel the full weight of justice. >> investigators sifted through the evidence for the next few days, looking for clues. later in the week, there were to be dramatic developments. >> in germany, a court in munich decided to delay the trial of a woman suspected in being involved in a neo-nazi murder spree. there has been controversy over the trial because despite huge media interest, the court had initially not allocated any seats to foreign reporters. eight of the 10 murder victims had turkish roots. the constitutional court objected. the trial will now start on may 6, with several seats results for turkish media. >> also on monday, north korea celebrated the 101st anniversary of the birth of its founder, kim il-sung.